| 摘要 |
The invention relates to earth-moving machines, in particular, to excavators.The inventive task is aimed at expanding functional features and improving operation reliability.The excavator comprises a wheeled chassis with a frame and operator cab mounted thereon, excavation and loading units, a hydraulic system designed as a one-loop system and comprising a fuel tank, a pump and a sectional hydrodistributor with safety, relief and by-pass valves associated with the excavation and loading units. The loading unit comprises hydrocylinders of a bucket control, and the hydraulic system pump is connected to the wheeled chassis via a compensating coupling. In the second embodiment the frame is further provided on the excavation side with vertical telescopic props and guides arranged perpendicular to the excavator longitudinal axis, carriage is arranged in the guides adapted to longitudinal displacement and a rotary column of the excavation unit fixed thereon able to turn in a vertical plane. |
